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Best Smart Thermostat 2023 • 7 Smart Thermostats Reviews
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Best Smart Thermostat 2023 • 7 Smart Thermostats Reviews

A smart thermostat can do much more than just managing your home's temperature. This app-enabled device helps you set up a heating and cooling schedule, so you get a comfortable environment every time you walk into your house. Features like remote access help you adjust the temperature wherever you are. Some advanced thermostats also pair with Google Assistant, Alexa, and Apple HomeKit to add to your comfort. Similarly, a programmable thermostat can be an excellent investment to reduce monthly electricity bills. If you are considering a thermostat upgrade for your home, you have landed in the right place. With so many options in the market, there is a chance you might end up with the wrong product. Therefore, it’s better to do your research beforehand. To save you the effort, we have tested a plethora of models and narrowed it down to a list of the best smart thermostats that are worth consideration. Let's dig in!

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Tested Products
Tested Products 7
Hours Spent
Hours Spent 76
Evaluated Studies
Evaluated Studies 115
Considered Reviews
Considered Reviews 169

What Is A Smart Thermostat And How Does It Work?

A smart thermostat is designed to intelligently manage heating and cooling schedules while cutting down on bills in the process. This smart device knows the temperature preferences of your family and adjusts them accordingly to keep your place comfortable all the time.

Smart thermostats are incorporated with many high-end features like remote access, smart home compatibility, voice control, and motion sensors.

A smart thermostat works similar to a regular thermostat, except it can also be connected to your home’s Wi-Fi. It consists of three components: one is the thermostat control itself, the second part is plugged into the HVAC system, and the third is the smart thermostat app. You can download the app on your smartphone, and this is what makes a thermostat “smart.”

When you adjust the temperature setting in the app, it is communicated to the thermostat using your Wi-Fi network. The thermostat then sends that particular signal to the HVAC system to make changes accordingly.

What Are The Types of Smart Thermostat?

Honeywell Lyric T5 Smart Thermostat with elegant aesthetics

Before settling on a model, you must know the types of this device. Depending on the technology they use, smart thermostats are categorized into three main types to fit your particular needs. Let’s discuss them one by one to see which one would work for you.

Algorithm-based smart thermostats:

This is the most common and widely known type of smart thermostats. It works like a regular programmable thermostat and allows you to set basic parameters. However, the unit gradually learns your preferences and updates the existing algorithms for an unmatched experience. For example, if you are away at a particular time of the day regularly, the thermostat control will automatically adjust the schedule according to the new pattern.

Geofencing smart thermostat:

One of the most advanced smart thermostats, the geofencing thermostat is quite popular these days. You can pre-set a range, and when you leave that range, the control will automatically activate the Away mode to ensure energy saving. However, this technology does not work well if more than one person uses the app with geofencing enabled in your place. Moreover, these thermostats tend to fall on the higher end of the price spectrum when compared to other types.

Motion sensor thermostats:

This type of thermostat uses a remote sensor and an app. The unit comes with a sensor that detects your body movement and heat to enable “at-home” or “away” modes accordingly. You can place the sensors anywhere at home. However, it is recommended to place them in a high-traffic area like the kitchen to make the most of it.

Who Is a Smart Thermostat Suitable For and What Benefits Does It Bring?

Smart thermostats improve your lifestyle by adding comfort while slashing down energy bills. This is a great choice for those who like to control the heating and cooling systems at their home and optimize energy consumption.

A specific smartphone app can control each thermostat and allows you to update the temperature settings, no matter where you are. Being an energy-efficient device, a smart thermostat can be a good purchase that helps you save a considerable amount of money in the long run. It uses different technologies like algorithms, sensors, and geofencing to determine if you are at home or away. This way, you don’t have to worry about resetting the unit every time you leave home.

The incorporation of voice control features and compatibility with Alexa and Google Assistant marks ease of use. These devices are also designed to learn your family’s preferences and adjust automatically to your comfort.

Shopping Criteria for Smart Thermostat

Once you hit the market, you will come across dozens of smart thermostats. Each of them serves different needs, so it is important to choose wisely. From installation to compatibility, there are a couple of factors you must consider before buying a smart thermostat for your home.

HVAC compatibility:

While smart thermostats give you control over heating and cooling systems, not all of them are suitable for your HVAC system. Therefore, it is essential to contact your HVAC manufacturer and check the compatibility with the new smart thermostat.


A well-designed smart thermostat goes a long way. A bright and colorful display makes programming and configuration easier, while also enhancing the interior. Some models display the local weather forecast and have a screen that lights up when you enter the room.

Energy Efficiency:

Smart thermostats turn the HVAC system off if there’s a fire.

Using a smart thermostat is an intelligent way to cut down on your monthly bills. Whenever you leave the house, the thermostat control triggers the “away” mode to save energy. Most models on the market are also Energy-Star rated for eco-friendly operation.


Each model comes with an instruction manual to help you install it. While each brand claims that its device can be easily installed, you must read through the manual to avoid any hassle.

A C-wire is generally absent in older HVAC systems, which can make the installation cumbersome. However, there are models available that don’t require this type of wire. This can help you save the cost of installing a C-wire.

Electronics compatibility:

One perk of a smart thermostat is that it can work with smart devices and smartphones around your place. You can control the unit through Alexa, Google Assistant, Siri, and Apple HomeKit. Make sure to opt for a model that you can easily connect to devices you most frequently use and have easy access to.

JOHNSON CONTROLS SiO2-00000 with seven programs

Ease of use:

A user-friendly unit can take the whole experience to the next level. There are thermostats with touchscreen interfaces, while others have manual setups. The decision ultimately comes down to your preferences, lifestyle, and budget.


Smart thermostats tend to be more expensive than standard thermostats. Go for a unit that comes with all essential features yet do not cost a fortune.

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What features make a thermostat smart?

A smart thermostat has advanced features that make it different from a regular thermostat. While each brand uses innovative ideas, some common features of smart thermostats are remote temperature controlling, timers, voice command, integration with smart home devices and app-enabled operation.

How much does a smart thermostat cost?

Smart thermostats are relatively expensive and are priced between $100 and $250. A reliable thermostat can cost around $150 on average. These devices pay for themselves in the long run by saving money on energy bills.

How does a smart thermostat differ from a programmable thermostat?

A programmable thermostat allows you to program the HVAC system and set basic parameters. Contrary to this, smart thermostats, though programmable, learn the user’s preferences over time and automatically make changes to suit your comfort.

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